syzbot


BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl

Status: internal: reported C repro on 2026/01/21 08:12
Bug presence: origin:downstream
[Documentation on labels]
Reported-by: syzbot+094f3189dad3b4f8adb0@syzkaller.appspotmail.com
First crash: 3d00h, last: 1h58m
Bug presence (3)
Date Name Commit Repro Result
2026/01/22 android16-6.12 (ToT) da606bc67c00 C [report] BUG: stack guard page was hit in corrupted
2026/01/22 lts (merge base) 318a47068f7b C Didn't crash
2026/01/22 upstream (ToT) [unknown] C Failed due to an error; will retry later

Sample crash report:
BUG: TASK stack guard page was hit at ffffc90003957ff8 (stack is ffffc90003958000..ffffc90003960000)
Oops: stack guard page: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 16507 Comm: syz.4.56190 Not tainted syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:plist_check_list+0x1e/0x2c0 lib/plist.c:45
Code: 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 40 48 89 fb 49 be 00 00 00 00 00 fc ff df <e8> 5d 91 ee fb 48 89 d8 48 c1 e8 03 48 89 45 b0 42 80 3c 30 00 74
RSP: 0018:ffffc90003958000 EFLAGS: 00010086
RAX: ffffffff8598e791 RBX: ffff8881f6e50428 RCX: ffff88810f349300
RDX: 0000000000000000 RSI: ffff8881f6e50428 RDI: ffff8881f6e50428
RBP: ffffc90003958068 R08: ffff888103a450c7 R09: 1ffff11020748a18
R10: dffffc0000000000 R11: ffffed1020748a19 R12: ffff8881f6e50428
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff888103662b88
FS:  00007fd9cc8566c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90003957ff8 CR3: 0000000116b8a000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 plist_check_head lib/plist.c:60 [inline]
 plist_add+0x69/0x5a0 lib/plist.c:78
 enqueue_pushable_task+0x124/0x3f0 kernel/sched/rt.c:393
 enqueue_task_rt+0x99c/0xfd0 kernel/sched/rt.c:1525
 enqueue_task+0x826/0x1210 kernel/sched/core.c:2153
 __activate_task kernel/sched/core.c:2200 [inline]
 activate_task+0x387/0x3d0 kernel/sched/core.c:2234
 ttwu_do_activate+0x15d/0x610 kernel/sched/core.c:4258
 ttwu_queue kernel/sched/core.c:4555 [inline]
 try_to_wake_up+0xd9e/0x1c50 kernel/sched/core.c:4895
 swake_up_locked kernel/sched/swait.c:29 [inline]
 swake_up_one+0x75/0x160 kernel/sched/swait.c:52
 swake_up_one_online+0x4d/0xf0 kernel/rcu/tree.c:1096
 __rcu_report_exp_rnp+0x1a9/0x1b0 kernel/rcu/tree_exp.h:205
 rcu_report_exp_cpu_mult+0x123/0x2c0 kernel/rcu/tree_exp.h:254
 rcu_report_exp_rdp kernel/rcu/tree_exp.h:263 [inline]
 rcu_preempt_deferred_qs_irqrestore+0x1da/0xb10 kernel/rcu/tree_plugin.h:521
 rcu_preempt_deferred_qs kernel/rcu/tree_plugin.h:622 [inline]
 rcu_note_context_switch+0x1b4/0x1210 kernel/rcu/tree_plugin.h:356
 __schedule+0x1bb/0x1fb0 kernel/sched/core.c:7714
 preempt_schedule_irq+0xab/0x110 kernel/sched/core.c:8172
 raw_irqentry_exit_cond_resched+0x32/0x40 kernel/entry/common.c:311
 irqentry_exit+0x4a/0x60 kernel/entry/common.c:354
 sysvec_reschedule_ipi+0x72/0x80 arch/x86/kernel/smp.c:248
 asm_sysvec_reschedule_ipi+0x1f/0x30 arch/x86/include/asm/idtentry.h:707
RIP: 0010:update_stack_state+0x3a4/0x4b0 arch/x86/kernel/unwind_frame.c:252
Code: 89 f7 e8 5f 8d 9a 00 49 c7 06 00 00 00 00 48 83 45 d0 08 eb 0c 48 83 e8 80 48 89 45 d0 4c 8b 6d c0 48 8b 45 90 42 80 3c 20 00 <74> 08 4c 89 ef e8 12 8c 9a 00 65 48 8b 05 1a 2d c0 7e 49 39 45 00
RSP: 0018:ffffc90003958c00 EFLAGS: 00000246
RAX: 1ffff9200072b1be RBX: ffffc90003958dc8 RCX: ffffc90003958e01
RDX: ffffc90003958e50 RSI: 1ffff9200072b1ba RDI: ffffc90003958e20
RBP: ffffc90003958cc0 R08: ffffc90003958e01 R09: 0000000000000000
R10: ffffc90003958dc8 R11: fffff5200072b1c5 R12: dffffc0000000000
R13: ffffc90003958df0 R14: ffffc90003958e20 R15: 1ffff9200072b1c1
 unwind_next_frame+0x3c1/0x750 arch/x86/kernel/unwind_frame.c:315
 __unwind_start+0x34c/0x410 arch/x86/kernel/unwind_frame.c:417
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xf2/0x170 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:48 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:69
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565
 poison_kmalloc_redzone mm/kasan/common.c:378 [inline]
 __kasan_kmalloc+0x96/0xb0 mm/kasan/common.c:395
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4395 [inline]
 __kmalloc_node_track_caller_noprof+0x251/0x4f0 mm/slub.c:4414
 __do_krealloc mm/slab_common.c:1239 [inline]
 krealloc_noprof+0x8d/0x130 mm/slab_common.c:1288
 <kernel::alloc::allocator::ReallocFunc>::call rust/kernel/alloc/allocator.rs:102 [inline]
 <kernel::alloc::allocator::Kmalloc as kernel::alloc::Allocator>::realloc rust/kernel/alloc/allocator.rs:141 [inline]
 <kernel::alloc::allocator::Kmalloc as kernel::alloc::Allocator>::alloc+0xb4/0x200 rust/kernel/alloc.rs:159
 <kernel::alloc::kbox::Box<kernel::rbtree::Node<u32, kernel::list::arc::ListArc<rust_binder_main::process::NodeRefInfo, 15493408726748792400>>, kernel::alloc::allocator::Kmalloc>>::new_uninit rust/kernel/alloc/kbox.rs:269 [inline]
 <kernel::rbtree::RBTreeNodeReservation<u32, kernel::list::arc::ListArc<rust_binder_main::process::NodeRefInfo, 15493408726748792400>>>::new rust/kernel/rbtree.rs:1048 [inline]
 <rust_binder_main::process::Process>::insert_or_update_handle+0x3eb/0x1f00 drivers/android/binder/process.rs:844
 <rust_binder_main::allocation::AllocationView>::transfer_binder_object+0x1d1/0x6b0 drivers/android/binder/allocation.rs:398
 <rust_binder_main::thread::Thread>::translate_object+0xeb6/0x6310 drivers/android/binder/thread.rs:789
 <rust_binder_main::thread::Thread>::copy_transaction_data+0x2ea7/0x5500 drivers/android/binder/thread.rs:1164
 <rust_binder_main::transaction::Transaction>::new+0x3b2/0x2120 drivers/android/binder/transaction.rs:81
 <rust_binder_main::thread::Thread>::transaction_inner drivers/android/binder/thread.rs:1328 [inline]
 <<rust_binder_main::thread::Thread>::transaction_inner as core::ops::function::FnOnce<(&kernel::sync::arc::Arc<rust_binder_main::thread::Thread>, &rust_binder_main::defs::BinderTransactionDataSg)>>::call_once usr/local/rustup/toolchains/1.91.1-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250 [inline]
 <rust_binder_main::thread::Thread>::transaction::<<rust_binder_main::thread::Thread>::transaction_inner>+0x8c4/0x1110 drivers/android/binder/thread.rs:1303
 <rust_binder_main::thread::Thread>::write+0x17dc/0xa690 drivers/android/binder/thread.rs:1442
 <rust_binder_main::thread::Thread>::write_read drivers/android/binder/thread.rs:1590 [inline]
 <rust_binder_main::process::Process>::ioctl_write_read drivers/android/binder/process.rs:1609 [inline]
 <rust_binder_main::process::Process>::ioctl drivers/android/binder/process.rs:1674 [inline]
 rust_binder_main::rust_binder_ioctl+0x1077/0x5da0 drivers/android/binder/rust_binder_main.rs:447
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x132/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fd9cb99acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd9cc856028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd9cbc15fa0 RCX: 00007fd9cb99acb9
RDX: 00002000000001c0 RSI: 00000000c0306201 RDI: 0000000000000003
RBP: 00007fd9cba08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd9cbc16038 R14: 00007fd9cbc15fa0 R15: 00007ffd5f35ec08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:plist_check_list+0x1e/0x2c0 lib/plist.c:45
Code: 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 40 48 89 fb 49 be 00 00 00 00 00 fc ff df <e8> 5d 91 ee fb 48 89 d8 48 c1 e8 03 48 89 45 b0 42 80 3c 30 00 74
RSP: 0018:ffffc90003958000 EFLAGS: 00010086
RAX: ffffffff8598e791 RBX: ffff8881f6e50428 RCX: ffff88810f349300
RDX: 0000000000000000 RSI: ffff8881f6e50428 RDI: ffff8881f6e50428
RBP: ffffc90003958068 R08: ffff888103a450c7 R09: 1ffff11020748a18
R10: dffffc0000000000 R11: ffffed1020748a19 R12: ffff8881f6e50428
R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff888103662b88
FS:  00007fd9cc8566c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc90003957ff8 CR3: 0000000116b8a000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	90                   	nop
   2:	90                   	nop
   3:	90                   	nop
   4:	90                   	nop
   5:	90                   	nop
   6:	90                   	nop
   7:	90                   	nop
   8:	90                   	nop
   9:	90                   	nop
   a:	90                   	nop
   b:	90                   	nop
   c:	55                   	push   %rbp
   d:	48 89 e5             	mov    %rsp,%rbp
  10:	41 57                	push   %r15
  12:	41 56                	push   %r14
  14:	41 55                	push   %r13
  16:	41 54                	push   %r12
  18:	53                   	push   %rbx
  19:	48 83 ec 40          	sub    $0x40,%rsp
  1d:	48 89 fb             	mov    %rdi,%rbx
  20:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  27:	fc ff df
* 2a:	e8 5d 91 ee fb       	call   0xfbee918c <-- trapping instruction
  2f:	48 89 d8             	mov    %rbx,%rax
  32:	48 c1 e8 03          	shr    $0x3,%rax
  36:	48 89 45 b0          	mov    %rax,-0x50(%rbp)
  3a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
  3f:	74                   	.byte 0x74

Crashes (43):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/21 12:01 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/24 05:55 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/24 01:53 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/24 01:36 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/24 00:03 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/24 00:02 android16-6.12 211c75c00cd3 4f25b9b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 21:11 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 20:06 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 19:44 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 17:12 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 15:52 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 15:26 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 14:55 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 13:55 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 13:27 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 11:22 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 10:16 android16-6.12 e75f33468e02 e2b1b6e6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 09:30 android16-6.12 e75f33468e02 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 06:39 android16-6.12 e75f33468e02 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/23 03:04 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 21:57 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 21:21 android16-6.12 da606bc67c00 82c9c083 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 16:36 android16-6.12 da606bc67c00 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 14:35 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 14:12 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 11:19 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 11:00 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 09:09 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 08:26 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 08:19 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 07:14 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 06:40 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 05:49 android16-6.12 f33ca06267f8 a16aed1d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 04:11 android16-6.12 f33ca06267f8 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 03:25 android16-6.12 f33ca06267f8 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/22 01:14 android16-6.12 f33ca06267f8 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/21 21:45 android16-6.12 f33ca06267f8 8fc37797 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/21 15:59 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/21 15:20 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/21 13:30 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/21 07:16 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
2026/01/21 06:56 android16-6.12 f33ca06267f8 6f1aa2f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-12-rust BUG: stack guard page was hit in rust_binder_main::rust_binder_ioctl
* Struck through repros no longer work on HEAD.